#include <db.h>

int
DB_ENV->set_mp_max_write(DB_ENV *env, int maxwrite, int maxwrite_sleep);

int
DB_ENV->get_mp_max_write(DB_ENV *env, int *maxwritep, int *maxwrite_sleepp);

Description: DB_ENV->set_mp_max_write

The DB_ENV->set_mp_max_write method limits the number of sequential write operations scheduled by the library when flushing dirty pages from the cache.

The DB_ENV->set_mp_max_write method returns a non-zero error value on failure and 0 on success.

Parameters

maxwrite

The maximum number of sequential write operations scheduled by the library when flushing dirty pages from the cache.

maxwrite_sleep

The number of microseconds the thread of control should pause before scheduling further write operations.

Errors

The DB_ENV->set_mp_max_write method may fail and return one of the following non-zero errors:

EINVAL

An invalid flag value or parameter was specified.

Description: DB_ENV->get_mp_max_write

The DB_ENV->get_mp_max_write method returns the current maximum number of sequential write operations and microseconds to pause.

The DB_ENV->get_mp_max_write method may be called at any time during the life of the application.

The DB_ENV->get_mp_max_write method returns a non-zero error value on failure and 0 on success.

Parameters

maxwritep

The maxwritep parameter references memory into which the maximum number of sequential write operations is copied.

maxwrite_sleepp

The maxwrite_sleepp parameter references memory into which the microseconds to pause before scheduling further write operations is copied.

Class

See Also